4 cao hno3

4 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno3
4 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno3
4 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno34 cao hno3